Wire drawing machine



M. E. EVANS WIRE DRAWING MACHINE July 28, 1936.

Filed Feb. 21, 1930 3 Sheets-Sheet l FIGJ INVENTOR July 28, 1936. M. E. EVANS 2,049,053

WIRE DRAWING MACHINE Filed Feb. 21, 1930 3 Sheets-Sheet 2 FIG. 5 Fl G. 3

y 1936. M. E. EVANS 2,049,053

WIRE DRAWING MACHINE Filed Feb. 21, 1930 3 Sheets-Sheet 5 as u) FIG. ID

\x 60 x 7 3L1 t I J k I 52 L J INVENTOR 5B 57 J5 5-4, //,V/

I A! I l g b5 wkv. 4M3 7 my k1 62 Patented July 28, 1936 UNITED STATES PATENT oFFicE.

25 Claims.

The present invention relates to wire drawing and particularly to a machine adapted to a variety of modes of operation; more specifically,

the invention involves improvements and refinements in the type of driving connection that is shown and described in Letters Patent 1,723,316, and in the type of drawing drum and accumulator arrangement shown and described in Letters Patent 1,666,928.

The invention resides in the several combinations and arrangements of parts hereinafter described and specifically pointed out in the claims and has for its principal objects: providing a drawing apparatus adapted to attenuating a plurality of wires simultaneously; providing a drawing block or drum adapted to operate in reversed directions with suitably positioned dies therefor; providing driving means and accumulating means adapted to control the drawing operations; providing for continuous wire drawing; that is, a succession of reductions on a single wire simultaneously; and providing for continucus drawing of a plurality of wires simultaneously.

Other objects and advantages will be apparent from the following description.

In carrying out my invention, I provide a selfcontained unit comprising an individually driven wire block adapted to drawing thereon a plurality of wires and suitably mounted on a frame, the driving arrangement including a motor connected to a worm particularly designed for reverse as well as forward movement in engagement with a worm gear on a spindle housed in the frame and connected rotatably with the wire block. Associated with the motor are provided the necessary devices for controlling the speed of the motor and its direction of rotation and thus of the particular block driven thereby. The units thus provided being self-contained, any desired number may be assembled to form a drawing bench with the requisite number of blocks or drums to meet the special requirements of the mill being designed. Because at least a pair of wires may be drawn on a single block, only onehalf as many units need be provided as compared with the usual arrangement for a given production. Associated with the block are ac cumulator-s, one for each wire drawn on the block, and driving means therefor, arranged to operate so that a constant number of coils of wire around the block supply the traction for drawing when tension on the coils is maintained by the portion of'the wire extending to the accumulator and gathered thereon.

In the drawings:

Figure 1 is a plan view of a self-contained drawing unit.

Figure 2 is an end elevation of the self-contained drawing unit shown in Figure 1. 5

Figure 3 is a sectional elevation along the lines ll shown in Figure 4.

Figure 4 is a sectional plan view along the line l-I shown in Figure 3.

Figure 5 is a modification of the drawing block 10 mechanism.

Figure 6 is a. partial sectional elevation of the drawing mechanism shown in Figure 5.

Figure 7 is a partial plan section of the drawing mechanism shown in Figure 3 along line 2-2. 15 Figure 8 is a plan view of a self-contained drawing unit and an associated accumulator.

Figure 9 is a sectional elevation of the view shown in Figure 8 along the line ll.

Figure 10 is a partial plan view along the line 20 |-l in section of the view shown in Figure 3 illustrating a modified driving arrangement suitable for reverse driving of the drawing drums.

Referring to Figures 3 and 4, the main frame I is a rectangular box-like structure, preferably 25 formed of an integral casting that is firmly supported by feet 2 on a substantial base 3. The bottom or floor d of such box-like frame slopes towards one side; that is, the left, as shown in Figure 3, and the lateral walls of such frame are imperforate save for a transverse opening 5 in the front wall, which is closed in the assembled condition of the parts by a cover plate 6. Note should also be taken of smaller openings 1 and 8 in the rear and front walls respectively, wherewith are connected lubricant supply and discharge lines- 9 and ID, by means of which lubricant may be maintained at any desired height in the chamber thus provided within the hollow frame.

The top of the hollow frame I is closed by a heavy plate II that not only forms a cover plate, but also serves to support a bearing i2 for the vertical hollow shaft l3 and a bearing I4 for a drawing ring [5 carrying flanged ring segments l6 hinged to the drawing ring l5 by pivots II. The upper end of the shaft l3 projects above the cover plate H and carries lower and upper friction rings l8 and I9 respectively, joined to the shaft by keyed hub 20 and disc 2|. The flanged ring segments l6, pivoted to swing radially, have upstanding portions 22 fitting the lower friction ring l8. A non-rotating spindle 23 arranged for longitudinal movement in the hollow shaft [3 whe ein it is supported carries, at its upper end,

a non-rotating bearing 24 supporting a rotatable disc 25 with recesses 28 on its upper side and with a depending conical flange 21 adapted to engage interiorly with the exterior of the upper friction ring IS. The lower exterior edge of the tapered flange 21 carries a removable ring 28 which, when removed, gives a free passage upwardly from the upstanding portions 22 of the flanged ring segments I6 to the upper conical flange 21. To the upper bearing I2 the upstanding shaft I3 transmits any axial thrust thereon incident to the engagement and disengagement of the conical flange 21 with the concentric friction ring I8 enclosed therein. The lower bearing 28 for the upstanding shaft I3 is carried in a box 38 provided on the floor 4 of the hollow frame I, radial ribs 3| on such floor serving to strengthen the latter and to brace such bearing. Through a gland 32 in the floor 4, the upstanding shaft I3 extends to a chamber between the floor 4 and the base 3 of a height determined by the height of the feet 2, sufllcient to accommodate the positioning of a pulley 33 on the end of such shaft to rotate therewith. A driving member 34 on the pulley 33 extends laterally through openings between the feet 2 of the frame, resting on the base 3 to drive any associated apparatus required by the invention. The lower end of the before mentioned non-rotating spindle 23 supported in the hollow shaft I3 extends through the pulley on the shaft I3 and rests its inclined end face on a similarly inclined face 35 parallel between shoulders 36 of a lever 31 pivoted at one end 38 on the base 3, the other end of the lever extending outwardly along the base 3 between feet of the frame. Flattened parallel faces 39 on the spindle 23 prevent rotation of the latter by engagement with the parallel shoulders 36 on the lever 31. Lateral movement of the lever 31 produces an axial movement of the spindle 23 and consequent engagement or disengagement of tapered flange 21 with friction ring IS in accord with the direction of the movement of the lever.

Around the segmented ring I6 is a flanged guard ring 40 resting on a table or top 4| fltted over the primary top H and resting on the frame I. The table is shaped and positioned to provide around each frame and between adjacent 55 material passed through guides 46 and 41 respectively, and the respective die holders contact tangentially with the drawing flanges 22 and 21. The degree of angularity is limited on the one side by the line of the frame and on the other side by the size of the support brackets and holders thereon. On an extension 48 of the base 3 to the rear of the frame I is mounted a motor 48 whose shaft 50 is connected by a flexible coupling with a horizontal shaft 52 that is journaled in suitable bearings 53 and 54 provided in the corresponding side of the frame I of the machine. The side in question is the one in which the transversely extending opening .5 occurs, as heretofore described, and the bearings 53 and 54 are held in suitable complementary recesses formed at each end of such opening and the adjacent portions of the cover plate 6. The portion of the shaft 52 held intermediate of said bearings is provided with a worm 55 that meshes with a worm gear 56 keyed or otherwise non-rotatably mounted on the upwardly extending shaft I3 that drives the friction surfaces l8 and I8 which connect rotating members 22 and 21. Bearing 54 and the corresponding end of worm shaft 55 is sealed by means of a cap 51, while a gland 58 similarly seals the other end of said shaft where it passes through bearing 53. These seals on the worm shaft and the gland'on the bottom of the upright shaft I3 serve to keep lubricating oil within the chamber of frame I.

The rear roller bearing 53 is arranged for free axial movement while roller bearing 54 is arranged to take axial thrust particularly in the rearward direction toward the motor with the worm operating, most advantageously, under tension in the section between the bearing 54 and the worm gear 56. To the end that the greatest efficiency of operation may be had in either direction of rotation of the motor, a special bearing construction, illustrated in Figure 10, is employed, wherein the floating bearing 53 is replaced by a I bearing 59 duplicating the stationary bearing 54.

The bearings 54 and 58 are definitely positioned relative to the worm 55 by collars thereon 60 and 6| respectively, and relative to the frame I by flanged casings 62 and 63 respectively, the latter held in position by cover plate 6 and by bolts 64 and 65. In the rear casing 63 is positioned a bearing cap 66 with a gland 58 therein. The attachment of the respective bearing casings 62 and 63 to the cover plate 6 provides a rigid mounting for the bearings on the worm shaft 52 so that no provision is required for any expansion that may occur, other than a slight clearance adjacent the respective bearing caps 51 and 66. With the cover plate mounting for the bearings, the latter are handled as a unit for installation in position on the frame I. Conical roller bearings maybe substituted for the ball bearings with complete satisfaction. As mounted in this design, the worm shaft 55 is always in tension, no matter in which direction the thrust of the worm gear acts.

Referring to Figure 7, showing a partial sectional view along line 22 of Figure 3, on a drawing ring l5 a series of pivots I1 hold a series of flanged ring segments |6 so that they interlock to limit their radial movement about the pivots I1. The pivot I1 is positioned at the center of a circular section 61 at one end of such ring segment. At the free end of the ring segment is positioned an extension 68 and a concave section 68 overlapping a projection on an adjacent ring section I8 with an intervening space 1| arranged so that the space H accommodates an outward radial movement of the free end of a segment, and an inward radial movement of the pivoted end of an adjacent segment, until said segments contact. The outward radial movement of the segment I6 releases the upstanding flange 22 from frictional engagement with the friction ring I8.

Again referring to Figures 1 and 2, the supply of current to the electric motor 49 is controlled in the first place by a switch box 12 conveniently mounted on an extension table 4| for ready manual manipulation, and for the accommodation of supplementary or associated equipment. The switch box includes a motor field rheostat with fleld rheostat relay operated by means of a handle 13 the position of which determines the direction of rotation of the drawing ring I5. A grid resistor 14 and a controller of standard type are mounted on the base extension 48 adjacent to the motor 49, the controller being operated through a link 16 from a lever 18 pivotally attached to the table; ex-

tension 8i and extending upwardly through elongated recess 18 therein. The guides 88 and 81 are, in fact, safety devices constituting levers suitably connected with a switch of standard type in the motor circuit arranged to apply dynamic braking to the motor. The entire-ma chine can thus be stopped within a few inches of travel on the block by a slight pull on'the'said' guide or guides. Dynamic braking is also applied to the motor whenever the main control switchis operated by the lever 11. the action taking" place as when the safety mechanism is operated.

In the operation of the embodiment of the invention thus far described, referring particularly to Figure 3, the wire from a diein either die holder 88 or' 88 is wound around the flanged ring sections a number of turns and tensioned to secure traction ofsaid ring sections through from which flange 21 depends, after which movement of lever 81 to the right (as shown in Fig ure 3) allows spindle 23 and the disc'25 to lower until flange 21 engages rotating friction ring l8 driven by connection to the centraidriving shaft l3. It is thus seen that the traction of the segmented ring I6 is dependent upon the initial tension on the wire and follows the traction of the flange 21 upon friction ring l8 or upon any other tensioning means. such as will be described later in another embodiment. with the traction established inthe manner outlined, the oncoming wire on segments 'is crowded in coils along the tapered flanges'22 and across the intervening joint to tapering flange 21 whereon it collects around pins, not shown, in recesses 26. The rate of movement'of the oncoming wire is governed by the rate of movementof the ten-,

sioning section of the wire. When the flange 21 lags behind the ring I! the ring sections l8 lag behind the friction ring l8 by an equal amount. When the lever 31 supporting the spindle 23 and the flange 21 is moved to the left sufliciently to partially disengage the flange 21 from the rotating ring IS, the wire oncoming to the flange 21 from the ring section i8 is not taken up as fast as supplied, resulting in an easing of the 55 tension of the coils on the ring section It, with a consequent easing of the pressure of the. ring section on the friction ring it! suflicient to bring the section I 6 and the flange 21 into harmony of movement. If the flange 21 releases from the ring I 9, the ring sections-I6 automatically release from the friction ring l8 and wire movement ceases. It is thus seen that the rate of handling the oncoming material is controlled independently of controlling the initial driving elements by controlling the rate "ofthe oflgoing wire and keeping it in harmony with succeeding wire manipulations. Variations in the handling of the collecting wire may bedictated by the rate of removal from the collected portion for further attenuation, or by the control requirements of the directly preceding attenuation.

Another method of operating the attenuating machine involves the use of an auxiliary collecting or accumulating means for the tensioning and collecting operations previously described,

holes 28.

but apart from'the machine. when such auxiliary mechanism is employed to take the oncomingwire from the flanged ring section it, the

flange 21 is available for drawing a second wire in the following manner: Ring 28 is-securely positioned upon the flange 21, thereby forming a conventional drawing drum. The'end of a wire from a die adjacent the die passing wire to the sector' rings is passed around the flange 21 and to a fastening, not shown, in one of' the pin Sumcient engagement between the flange 21 and the friction ring I! is then established by lowering of flange 21 through the movement of the lever 81 to rotate the flange 21 and to crowd upwardly thereon through the action of ring 28 oncoming attenuated 'wire into an accumulation of coils. This conventional drawing drum and its accumulationoi wire is supported and carried by the stationary upright spindle 28 resting practically on the bed 8. The auxiliary collecting 'or accumulating means, not shown, may be driven at'a peripheral speed in accord with that of the flanged ring liby a driving connection 88 extending theretofrom the pulley 88 attachedto the lower end of the drive shaft l8.

In Figures and 6, are shownplan and partial sectional elevation views respectively of modified traction apparatus to replacethe segmented rings l8 and flange element 21 previously described. On the non-rotating bearing 28 the rotatable disc 18 carries depending pairs of lugs 88 through which pins 8i pass to'position between each pair of lugs on the quarter by bolts l1 so that rotation of the ring is causes rotation of the rings 81 and i8. "In operation, this embodiment functions very much as does the preceding arrangement for drawing two wires simultaneously; after passing through a reducing die, a wire is coiled around sectors 88 and attached to a fastening not shown in openings 89 in the disc 19, thereby binding the sectors in close engagement with the friction ring l9. The bearing 28 is then lowered, as previous-- ly described, by movement of the lever 31. The lowering of the bearing lowers the sectors 88 into the closest engagement with the driving ring l9, while the reverse movement releases the sector. The flanges 85 crowd the coils of oncoming wire upward along the sectors where it collects on-pins, not shown, in recesses 88. In the slits 98 between sectors 88 legsof a stripper, not shown, may be positioned'for removing the drawn wire after disengagement of the sectors from the driving ring i9. Again. after passing through a die, a second wire ,is coiled around the upstanding flange 88 a number of 'timeis'and tensioned thereon sufliciently to provide drawing traction by attachment to an auxiliary accumulator preferablyoperated at the same-peripheral speed as that of the flange 88.'- ""If the accumulators peripheral speed is less than that of the" flange -88, the wire coiled on the latter slips thereon to compensate for thediiference in movement. This slipping is not detrimental in all cases: however, it is preferable that it be avoided, if possible.

Referring to Figures 8 and 9, showing plan and sectional elevation views, respectively, of drawing mechanism and an auxiliary accumulator, a driving shaft i8 is keyed to a hub 20 from which a disc 2I extends to an upstanding friction ring I 9 and a depenling gear 9i. The depending gear 8i engages teeth 82 interiorly of an upstanding flange 83 on a ring 84 having depending shoulder 95 carrying a bearing 98 positioned eccentrically relative to the driving shaft I3, and supported on the frame top II. The exterior edge of the upstanding flange 93 extends even with or beyond the flange 28 of the drum 21 positioned above and adjacent thereto. Below and adjacent to the top plate II a pulley 91, positioned on drive shaft i3, carries a driving member 98 extending through openings 99 in frame I to a pulley IOI integral with the lower end of hollow shaft I02, carried in a bearing I03 in an auxiliary frame I04 which is attached to the main frame I.by bolts I05. Keyed to the upper end of the shaft I02 is a friction drum I08 which frictionally engages a flange or drum 21' carrying a ring 28' exteriorly at its lower end and attached to disc 25 at its inner upper end. A bearing 24' supports the disc 25' and rests on a non-rotatable spindle 23. On the lower end of the spindle 23 an inclined face rests on a like inclined face I01 of a lever I08 pivoted on an extension I09 of the auxiliary frame I04 and supported by a yoke IIO depending from the bearing I03 of the auxiliary frame I04. A pair of parallel flattened faces Iii on the lower end of the short spindle 23 keeps said spindle from rotation by contact with a pair of shoulders II2 on the lever I08 while facilitating reciprocating movement of the spindle 23, when the lever I08 is shifted. The operation of the lever I08 engages or disengages the drum 21' with friction drum I08, and similarly through a connecting link I I3, to the lever 31 below the main shaft I3 engages or disengages drum 21 with friction ring I9 when the connecting link I3 is suitably positioned. When individual operation of the levers 31 and I08 is contemplated, the link II3 between the two levers is disengaged.

In operation of the mechanismv outlined in Figures 8 and 9, peripheral movement of the accumulating drums 21 and 21' and the geared flange 93, preferably, is identical. Positions of the drums 21 and 21' relative to the member 93 are such as to readily facilitate passage of material wound on the latter to either or both of the former members simultaneously. A wire from a die in either holder 44 or 45 coiled around the flange 93 may be tensioned on the latter sufliciently to provide traction for the drawing of the wire through the die. The tensioning may be provided by attachment of the end of the coil to either accumulating drum 21 or 21'. First, consider the end of the wire attached to the drum 21 by a connection, not shown, in an opening 28 of the drum support 25, the wire passing thereto from the top of the flange 93 over the edge of the ring 28 and collecting around the drum 21 in ever increasing coils, while the number of coils around the flange 93 remains constant. The ring 28 on the bottom of the drum 21 lifts the wire longitudinally off from the traction flange 93 by riding along the wire as it is lifted. This is made possible by the relative eccentric positioning of the flange 88 and the ring 28. A stripper, not shown, may be positioned in suitable recesses H4 for removal of the wire from the accumulation on the drum 21.

Now, secondly, consider the end of another wire attached to the auxiliary collecting drum 21' by a connection, not shown, in a recess 28' of the drum support, the wire passing thereto tangentially from the flange 93 under sufllcient tension to provide drawing traction, without slippage, on flange 93. The slippage of wire on flange 93 is avoided by having peripheral movement of the flange 93 and the collecting drum" 21' in accord. There are times when the slippage is intentionally provided to regulate the rate of drawing where a number of drawing operations are being performed at one time on a wire by a number of drawing units in a bench. Such slippage is provided by adjusting the peripheral rate of the tensioning means. With the second method of operation only effective; that is, collecting on the auxiliary drum 21, the drum 21 is free for operations in the conventional drum drawing operation for a separate wire, as previously outlined in connection with Figure 3.

The use of the auxiliary accumulator makes possible the simultaneous drawing on a single drum or flange and separate accumulating of a plurality of wires. Now, thirdly, consider a pair of wires, each with its own die, both dies in either holder 44 or 45, coiled together or separately around the drawing flange 93 sufllciently numerous and tight to secure drawing traction thereon and departing separately therefrom, one

wire passing tangentialy to the auxiliary ac- 3 cumulator 21' to collect thereon, as outlined in the above described secondly considered case, and the other wire passing upwardly and collecting on the accumulator 21, as outlined in the first considered case. With this placement of material, the ring 28 should be removed when eccentric positioning of the drawing flange and the superposed accumulator is not employed.

This placement of material lends itself to increasing the efficiency of individual blocks now in service, to which auxiliary accumulators are attached. Where formerly one wire was drawn, with the application of the present invention, two wires may be drawn with an increased production of eighty percent. Variations in the type of auxiliary accumulator employed vary the production, and are chosen in accord with the ends in view. Variations in the drive for the present auxiliary accumulator are contemplated. Instead of the driving arrangement illustrated in Figure 8 and Figure 9, may be substituted connections exterior of frame I, as previously mentioned in connection with Figure 3. A suitably sized pulley 33, non-rotatably mounted on the lower exterior end of the shaft I3, carries a driving connection 34 which may be directed to the suitably sized pulley I 0| on the shaft I02 of the auxiliary accumulator illustrated in Figures 9 and 10; or, an extension of shaft 52 through a bearing cap 86 and gland 58 substituted for cap 51 may be the source of power. It is obvious that the reversal of the rotation of the drawing apparatus automatically reverses the rotation of the accumulating apparatus. Further, the drawing drums for the invention need not be conflned to those of self-contained units though the latter are preferable, and are chosen by way of illustration of the invention.

Referring now, as a fourth method of operation, to continuous wire drawing, wherein a succession of reductions are performed simultaneously on a wire by a series of linearly positioned drawing units, consideration may. I be given to units after the designillustrated in Figures 3 and 4. The invention contemplates that a single wireshall be drawn, a single draft or reduction on thejlower drawing .drum or ring it and flange 22 and then passed tangentially therefrom to a succeeding die, and like unit adjusted to operate at a speed to practically take up the wire as fast as delivered thereto. From the last drawing drum, the wire is passed tangentially to an auxiliary accumulator drum 21' such as illustrated in Figures 8 and 9, whereon the wire is collected, and from which it is removed by a stripper, not shown. With the first wire in process of reduction on the lower drums of the successive units, the upper drums or fianges 21 are available for initial processing of the succeeding or second wire, and to this end the removable rings 28 are reversed and raised to positions indicated by 28"in Figure 3, and there fastened so that wire wound on the lower portion of drum 2! below the ring 28 may be readily passed to the drawing drum below. The second wire is pointed, passed through a die suitably positioned in the first die holder of the series of units. and the end fastened to the first drum 2! of the series in any of the ways well known to the art on the side of the ring 28 adjacent to the operating ring J6, and enough coils accumulated thereon, more than sufficient to provide traction for pulling the wire through the die. The end of the wire is then removed from the first drum tangentially to a succeeding die and again fastened to a like drum, the two drums operating on the wire simultaneously, until coils slightly more than sufficient to provide traction for pulling the wire through the last die are accumulated on the last drum. Then, as the first drum of the first series becomes empty, the wire coiled on the adjacent drum is moved axially onto the empty drum, and in like manner as the succeeding drums of the first series become empty, coils are deposited thereon from the ad- Jacent drums, the end of the wire being fastened to the associated accumulator after removal therefrom of the preceding wire. In this manner, the time of idleness of the drums of the first series due to the threading operations, is reduced. A fifth method of operation is a variation of the fourth method, whereby the two wires there mentioned are continued to final drafting in their initially threaded position. To this end, the final unit employed is that lllustrated in Figure 9, wherein the drum 21 and flange 28 serve as drawing and storage means for the final draft of one continuous operation, while member 93 and members 21' and 28' serve in a similar manner for the final draft of the other continuous operation.

The positioning of the auxiliary accumulator and the number of accumulators employed may be varied. Only two accumulators have been illustrated, shown in Figures 8 and 9, one adjacent, and the other superposed above the drawing drum. But both may be rather remotely positioned relative to the drawing drum and associated dies, so that wire may be drawn tangentially from the accumulators to the dies. Such an arrangement, with special features, is shown in copending application. The driving of auxiliary apparatus, or even primary apparatus in continuous wire drawing or multiple wire drawing, is contemplated to be eflected by various connections to the horizontal shaft 52. Referring to Figure 10, the bearing arrangement there illustrated lends itself to the extension of the shaft 52 beyond the bearing 64 by thesimple expedi-' ent of using bearing arrangement 88 for both ends of the. worm. On such an extensio a power takeoff in accordance with operatin quirements may be made to the extent of driving two drawing units from the shaft 52 and its single motor connection. The second unit connected to the shaft thus becomes a duplicate of the arrangement illustrated in Figure 10.

In Letters Patents 1,723,316 and 1,666,928, the drawing drums are integral with and are carried by the driving shafts whichdrive them. In the present invention the drawing drums are separate from and 'are carried apart from the driving shafts. Such separation permits variations in the movements of the drawing drums without varying the movement of the driving shaft, which are largely essential in the present invention. In neither of the former patents is there any control over the rate of accumulator winding during the winding operation. also is an essential feature of the present invention. The combination of the control of the drawing drum winding with the control of the accumulator winding secures operating results This entirely foreign to results from the operation of the foregoing patents and the art. The control of the winding extends to the reversal of winding operations.

I claim:

1. In wire drawing mechanism, the combination of a hollow frame, a top plate across the top of said frame, a hollow upstanding shaft Journaled in said top plate and in the bottom of said frame with the upper end projecting above said top plate, a spindle in said hollow shaft and extending thereabove and through a gland in the bottom of said frame and supported therein by the frame base; a drawing drum supported on the upper end of said spindle; a driving connection between the said upstanding hollow shaft andsaid drawing drum, and a driving connection to said upstanding shaft, said spindle by reason of its support to said drawing drum relieving the pressure upon said top plate in consequence of the weight and operation of said drum.

2. In wire drawing mechanism, the combination of a hollow frame, a top for said frame, a hollow upstanding shaft journaled in said top plate and in the bottom of said frame with the upper end projecting above said top plate, a spindle extending through and above the upper end of said shaft and supported therein by the frame base, a drawing drum supported on the upper end of said spindle, a driving connection between said drum and said upstanding shaft, and a power connection to said upstanding shaft, said spindle by reason of its support to said drawing drum relieving the pressure upon said top plate in consequence of the weight and operation of said drum. 2

3. In wire drawing mechanism, the combination of a hollow frame, a top piece for said frame, a hollow upstanding shaft journaled in said frame top piece and in the bottom of said frame with I the upper end projecting above said top piece, a spindle in the hollow of said upstanding shaft and extending thereabove, a drawing drum supdrawing drum encircling said upright shaft, a support on said top piece for said second drum, driving connections between said drums and said upstanding shaft permitting relative movement therebetween, and a power connection to'said upstanding shaft.

4. In wire drawing mechanism, the combination of a hollow frame, a top piece for said frame, a hollow upstanding shaft journaled in said frame top piece and in the bottom of said frame with the upper end projecting above said top piece, a spindle in the hollow of said shaft projecting above the latter and through a gland in the bottom of said frame and supported therein by the frame base, a drawing drum supported on the upper end of said spindle, a driving connection between said drawing drum and said upright shaft, and means for adjusting said driving connection to permit relative change in rotational movement of said drawing drum and said upright shaft, said box frame providing an oil reservoir for said journaled shaft.

5. In wire drawing mechanism, the combination of a rotatable wire drawing drum, a rotatable wire storage drum in end to end relation to said drawing drum, mountings for said drums, a drive shaft, driving connections from said shaft to said drawing drum and to said storage drum, the latter being releasable, a frame supporting said combination, and a power connection to said drive shaft; wire passing from said drawing drum to said storage drum at a rate governed by the peripheral movement of said storage drum.

6. In wire drawing mechanism, the combination of a wire drawing drum, a mounting for said drum, a wire storage drum in end to end relation to said drawing drum, a mounting for said storage drum, a drive shaft, releasable driving connections from said drive shaft to said drawing drum and to said storage drum, a frame supporting said combination, and a power connection to said drive shaft; wire passing from said drawing drum to said storage drum at a rate governed by the peripheral movement of said storage drum determined by the adjustment of the latters driving connection.

'7. In wire drawing mechanism, the combination of a wire drawing drum, in end to end relation to said drawing drum and eccentric thereto a flanged wire storage drum of smaller diameter than said drawing drum, driving means for said drums adapted to give said drums the same peripheral velocity whereby when wire is lifted by the flange of said storage drum the wire will be progressively guided to said storage drum at a rate in accord with the rate of drawing on said drawing drum.

8. In wire drawing mechanism, the combination of a hollow frame, a top-piece for said frame, an upstanding shaft journaled in said top-piece and said frame and extending above said piece, journals for said upstanding shaft, a driving connection to said shaft intermediate said journals, a drawing drum concentric with and having a driving connection to said shaft and having an individual bearing on said top-piece, said bearing by reason of its support to-said drawing drum relieving the pressure and consequent wear upon the upper journal of said upstanding shaft due to weight and operation of said drum.

9. In wire drawing mechanism, the combination of a hollow frame, a top-piece for said frame, an upstanding shaft journaled in said top piece and said frame and extending its upper end above said piece, journals for said upstanding shaft, a

driving connection to said shaft intermediate said journals, said frame and top piece providing an oil chamber around said driving connection, a drawing drum concentric with and having a driving connection to said shaft and havlngan individual bearing on said top-piece, said bearing by reason of its support to said drawing drum relieving the pressure and consequent wear upon the journal of said upstanding shaft due to the weight and operation of said drum.

10. In wire drawing mechanism, the combination of a drawing drum, a support therefor, driving means therefor reversible whereby full operation in reversible directions is available, a pair of die holders, dies in said holders, directing their orifices to tangency with said drawing drum, said holders by their lines of tangency forming an included angle of less than 180 outside of said drawing drum, and a plurality of accumulating means adapted to receive wire from said drawing drum and to alternately deliver said wire through said dies to said drawing drum in accordance with said reversible operation.

11. In wire drawing mechanism, the combination of a hollow frame, a top-piece for said frame, an upstanding shaft journaled in said top piece and said frame and extending its upper end above said piece, journals for said upstanding shaft, a reversible driving connection to said shaft intermediate said journals, said frame and top piece providing an oil chamber around said driving connection, a drawing drum concentric with and having a driving connection to said shaft and having a pair of die holders associated therewith, dies in said holders directing their orifices to tangency with said drawing drum, a plurality of accumulating means adapted to receiving wire from said drawing drum and to alternately deliver said wire through said dies to said drawing drum in accordance with said reversible operation.

12. In wire drawing mechanism, the combination of a hollow frame, a top-piece for said frame, a hollow upstanding shaft journaled in said top- -piece and in the bottom of said frame with the upper end projecting above said top piece, journals for said upstanding shaft, a driving connection intermediate said journals on said shaft, said frame and top piece providing an oil chamber around said connection, a spindle in the hollow of said upstanding shaft extending thereabove and supported therebelow, a drawing drum supported on the upper end of said spindle, and a driving connection between said drum and said shaft and a bearing for said drawing drum on said top piece adapted to relieve bending stresses in said upstanding shaft.

13. In wiredrawing mechanism, the combination of a hollow frame, a top-piece for said frame, an upstanding shaft journaled in said go top-piece and in said frame and extending its upper end above said piece, journals for said upstanding shaft, a driving connection to said shaft intermediate said journals, a drawing drum concentric with and having a driving connection 05 to said shaft and having an individual bearing on said top-piece, said bearing relieving the pressure and wear upon the'journal of said upstanding shaft due to the weight and operation of said drum, and a second drawing drum above and 70 concentric with said first drawing drum and having a driving connection with said upstanding shaft, said upper drum being adapted to coil wire thereon independently of and in cooperation with said lower drum.

14. In wire drawing mechanism, the combination of a hollow frame, a top-piece for said frame, an upstanding shaft Journaled in said frame and extending above said top-piece, a journal in said frame for said upstanding shaft, a driving connection to said shaft above said journal, a drawing drum concentric with and having a driving connection to said shaft and having an individual bearing on said top piece, said bearing by reason of its support to said drawing drum relieving bending stresses upon the upper part of said upstanding shaft due to weight and operation of said drum.

15. In wire drawing mechanism the combination of a hollow frame, a top-piece for said frame, an upstanding shaft joumaled in said frame and extending above said top-piece, a journal in said frame for said upstanding shaft, a driving connection to said shaft above said journal, a drawing drum concentric with and having a driving connection to said shaft and having an individual bearing on said top-piece, said bearing by reason of its support to said drawing drum relieving bending stresses upon the upper part of said upstanding shaft due to weight and operation of said drum, and an upstanding spindle in said shaft adapted to support the weight of wire drawn by said drawing drum.

16. In wire drawing mechanism, the combination of a hollow frame, a top-piece for said frame,

an upstanding shaft 'journaled in said frame and extending above said top-piece, a journal in said frame for said upstanding shaft, a driving connection to said'shaft above said journal, a drawing drum concentric with and having a driving connection to said shaft and having an individual bearing on said top-piece, said bearing by reason of its support to said drawing drum relieving bending stresses upon the upper part of said upstanding shaft due to weight and operation of said drum, said drum and upstanding shaft rotating as a unitary structure in a drawing operation.

1'7. In wire drawing mechanism, the combination of a hollow frame, a top-piece for said frame, an upstanding shaft journaled in said frame and extending above said top-piece, a journal in said frame for said upstanding shaft, a drawing drum concentric with and having a driving connection to said shaft and having an individual bearing on said top-piece,said bearing by reason of its support to said drawing drum relieving bending stresses upon the upper part of said upstanding shaft due to weight and operation of said drum, a mounting for a storage drum, and a storage drum on said mounting adapted to collect wire from said drawing drum thereby relieving the bearing of said drawing drum of the weight of accumulating wire being drawn.

18. In wire drawing mechanism, the combination of a hollow frame, a top-piece for said frame, an upstanding shaft journaled in said frame and extending above said top-piece, a journal in said frame for said upstanding shaft, a drawing drum concentric with and having a driving connection to said shaft and having an individual bearing on said top-piece, said bearing by reason of its support to said drawing drum relieving bending stresses upon the upper part of said upstanding shaft due to weight and operation of said drum, a mounting for a storage drum, and a storage drum on said mounting adapted to collect wire from said drawing drum thereby relieving the bearing of said drawing drum of the weight of accumulating wire being drawn, said storage drum being adapted to supply wire subsequently to said drawing drum for further drawing.

19. In wire drawing apparatus, the combination of a hollow frame, a top-piece for said frame, an upstanding shaft extending through and above as said top-piece, a driving connection to said upstanding shaft, a drawing drum concentric with and having a driving connection to said shaft and having a bearing on said top-piece, said bearing by reason of its support to said drum relievdo ing bending stresses upon the upper part of said upstanding shaft due to the weight and operation of said drum.

20 In wire drawing apparatus, the combination of a hollow frame and a top-piece for said l5 frame providing an oil reservoir, an upstanding shaft in said top-piece and extendingthereabove,

a driving connection to said shaft, a drawing drum concentric withand having a driving connection to said shaft and having a bearing on 20 said top-piece, said bearing by reason of its support to said drum relieving bending stresses upon the upper part of said upstanding shaft due to weight and operation of said drum:

21. In wire drawing apparatus, the combina- 25 tion of a hollow frame and a top-piece for said frame providing an oil reservoir, an upstanding shaft journaled in said top-piece and extending thereabove, a driving connection to said shaft, a drawing drum concentric with and having a driving connection to said shaft and having a bearing on said'top piece, said bearing by reason of its support to said drum relieving bending stresses upon the upper part of said upstanding shaft due to weight and operation of said drum.

22. In wire drawing apparatus, the combination of a hollow frame and a top piece for said frame, an upstanding shaft .journaled in said top-piece and extending thereabove, a driving connection to said shaft, a drawing drum concentric with and having a driving connection to said shaft and having a bearing on said top piece, said bearing by reason of its support to said. drum relieving bending stresses upon the upper part of said upstanding shaft due to weight and operation of 45 said drum, and means to control the driving connection between said shaft and said drum.

23. In wire drawing apparatus, the combination of a hollow frame and a top-piece for said frame providing an oil reservoir, a hollow upstanding shaft journaled in said top piece and extending thereabove, a driving connection to said shaft, a drawing drum concentric with and having a driving connection'to said shaft and having a bearing on said top piece, said bearing by reason of its support to said drum relieving bending stresses upon the upper part of said upstanding shaft due to weight and operation of said drum, and in said hollow shaft a spindle adapted to control the driving connection between said 60 shaft and drum.

24. In wire drawing apparatus, the combination of a hollow frame, a top-piece for said frame, an upstanding shaft journaled in said top piece and extending thereabove, adriving connection 66 to said shaft and having an individual bearing on said top piece, said bearing by reason 'of its support to said drum relieving bending stresses upon the upper part of said upstanding shaft due to weight and operation of said drum, means to 70 control the driving connection between said shaft and said drum, mountings for a plurality of storage drums, drums on said mountings and controllable driving connections therewith, said drawing drum being alternately rotated in oppo- 76 site directions and said storage drums cooperating therewith by acting alternately as supply and storage drums in drawing wire.

25. In wire drawing apparatus, the combination of a hollow frame, and a top piece for said frame providing an oil reservoir, an upstanding shaft Journaled in said top piece, a journal for said shaft in said top piece, a driving connection to said shaft, a drawing drum concentric with and 1. having a driving connection to said shaft and having 81} individual bearing on said top piece, said bearing by reason of its support to said drum relieving bending stresses upon the upper part of said upstanding shaft due to weight and operation of said drum, a gland in said frame, and through said gland means operative to control the driving connection between said drawing drum and upstanding shaft.

MARTIN E. Evans. 10 

